{"id":{"repo_id":"houston","oai_identifier":"oai:uh-ir.tdl.org:10657/2817"},"canonical_url":"https://search.dev.ndltd.org/etd/houston/oai:uh-ir.tdl.org:10657/2817","repository":{"repo_id":"houston","name":"University of Houston","base_url":"https://uh-ir.tdl.org/server/oai/request"},"display":{"title":"Comparison and Correction of Multistage Triaxial Tests to Single Stage Triaxial Test for the Rock Mechanical Testing","abstract":"In this work, we investigate the relationship between two test protocols; the Single Stage Triaxial (SST) is where a constant confining stress is applied and the axial stress is raised until the sample fails. This is compared to the Multistage Triaxial (MST) test, where the sample is loaded to the point of positive dilatency (PPD) then unloaded to low deviatoric stress, the confining stress raised and the procedure repeated. We have performed these measurements for several different types of rocks (Shale, Sandstone, and Chalk) and compared the results in terms of Young’s modulus, Poisson’s ratio, stiffness, friction angle, and cohesion. We provide a detailed discussion of the techniques and measurements required to correct the MST results to those obtained from SST protocol. A single correction factor is found to relate the MST results to the SST. Future work is proposed to further develop the measured parameters from these two test protocols.","abstract_html":"In this work, we investigate the relationship between two test protocols; the Single Stage Triaxial (SST) is where a constant confining stress is applied and the axial stress is raised until the sample fails. This is compared to the Multistage Triaxial (MST) test, where the sample is loaded to the point of positive dilatency (PPD) then unloaded to low deviatoric stress, the confining stress raised and the procedure repeated. We have performed these measurements for several different types of rocks (Shale, Sandstone, and Chalk) and compared the results in terms of Young’s modulus, Poisson’s ratio, stiffness, friction angle, and cohesion. We provide a detailed discussion of the techniques and measurements required to correct the MST results to those obtained from SST protocol. A single correction factor is found to relate the MST results to the SST. Future work is proposed to further develop the measured parameters from these two test protocols.","abstract_has_math":false,"creators":["Al Salman, Malik Essam Hamzeh Essam"],"institution":"University of Houston","degree_name":"Master of Science","degree_level":"Masters","degree_discipline":"Petroleum Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Myers, Michael T."],"committee_chairs":[],"committee_members":["Hathon, Lori A.","Willam, Kaspar J."],"year":2015,"date_issued":"2015-05","date_published":"2015-05","updated_at":"2026-07-24T02:31:59Z","subjects":["Triaxial","Multi-stage","Multiple stage","Rock mechanics","Poisson's ratio","Stiffness","Young's","Axial stress","Confining stress","Mohr","Coulomb","Principal stress"],"languages":["eng"],"rights":["The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s)."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10657/2817","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Myers, Michael T."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Hathon, Lori A.","Willam, Kaspar J."]},{"key":"dc:creator","label":"Author","values":["Al Salman, Malik Essam Hamzeh Essam"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-03-05T20:43:57Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2018-03-05T20:43:57Z"]},{"key":"dc:date.issued","label":"Date","values":["2015-05"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Petroleum Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Houston"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Triaxial","Multi-stage","Multiple stage","Rock mechanics","Poisson's ratio","Stiffness","Young's","Axial stress","Confining stress","Mohr","Coulomb","Principal stress"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s)."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10657/2817"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In this work, we investigate the relationship between two test protocols; the Single Stage Triaxial (SST) is where a constant confining stress is applied and the axial stress is raised until the sample fails. This is compared to the Multistage Triaxial (MST) test, where the sample is loaded to the point of positive dilatency (PPD) then unloaded to low deviatoric stress, the confining stress raised and the procedure repeated. We have performed these measurements for several different types of rocks (Shale, Sandstone, and Chalk) and compared the results in terms of Young’s modulus, Poisson’s ratio, stiffness, friction angle, and cohesion. We provide a detailed discussion of the techniques and measurements required to correct the MST results to those obtained from SST protocol. A single correction factor is found to relate the MST results to the SST. Future work is proposed to further develop the measured parameters from these two test protocols."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Comparison and Correction of Multistage Triaxial Tests to Single Stage Triaxial Test for the Rock Mechanical Testing"]}]}],"canonical_facts":{"dc:contributor.advisor":["Myers, Michael T."],"dc:contributor.committeemember":["Hathon, Lori A.","Willam, Kaspar J."],"dc:creator":["Al Salman, Malik Essam Hamzeh Essam"],"dc:date.accessioned":["2018-03-05T20:43:57Z"],"dc:date.available":["2018-03-05T20:43:57Z"],"dc:date.issued":["2015-05"],"dc:description.abstract":["In this work, we investigate the relationship between two test protocols; the Single Stage Triaxial (SST) is where a constant confining stress is applied and the axial stress is raised until the sample fails. This is compared to the Multistage Triaxial (MST) test, where the sample is loaded to the point of positive dilatency (PPD) then unloaded to low deviatoric stress, the confining stress raised and the procedure repeated. We have performed these measurements for several different types of rocks (Shale, Sandstone, and Chalk) and compared the results in terms of Young’s modulus, Poisson’s ratio, stiffness, friction angle, and cohesion. We provide a detailed discussion of the techniques and measurements required to correct the MST results to those obtained from SST protocol. A single correction factor is found to relate the MST results to the SST. Future work is proposed to further develop the measured parameters from these two test protocols."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/10657/2817"],"dc:language.iso":["eng"],"dc:rights":["The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s)."],"dc:subject":["Triaxial","Multi-stage","Multiple stage","Rock mechanics","Poisson's ratio","Stiffness","Young's","Axial stress","Confining stress","Mohr","Coulomb","Principal stress"],"dc:title":["Comparison and Correction of Multistage Triaxial Tests to Single Stage Triaxial Test for the Rock Mechanical Testing"],"thesis:degree_discipline":["Petroleum Engineering"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["University of Houston"]},"updated_at":"2026-07-24T02:31:59Z"}